Meriwether Lewis had been commissioned by President Jefferson to lead a daring expedition so remarkable it would become one of the most famous explorations in history. He chose as his co-captain William Clark. Their mission - to find a land route to the Pacific Ocean while learning as much as possible about the thousands of miles of unexplored territory they struggled through (1774-1809). Heroes of History is a unique biography series that brings the shaping of history to life with the remarkable true stories of fascinating men and women who changed the course of history. Audiobook: CD format (6 CDs) Running Time: Approximately 5:36 hours. Read by Tim Gregory. Ages 8-10 to Adult The stories of Heroes of History are told in an engaging narrative format, where related history, geography, government, and science topics come to life and make a lasting impression. This is a premier biography line for the entire family. Janet and Geoff Benge are a husband-and-wife writing team with more than twenty years of writing experience. Janet is a former elementary-school teacher. Geoff holds a degree in history. Originally from New Zealand, the Benges spent ten years serving with Youth With A Mission.